xref: /aosp_15_r20/external/libdav1d/src/x86/cpuid.asm (revision c09093415860a1c2373dacd84c4fde00c507cdfd)

; Copyright © 2018, VideoLAN and dav1d authors
; Copyright © 2018, Two Orioles, LLC
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
;
; 1. Redistributions of source code must retain the above copyright notice, this
;    list of conditions and the following disclaimer.
;
; 2. Redistributions in binary form must reproduce the above copyright notice,
;    this list of conditions and the following disclaimer in the documentation
;    and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
; ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

%include "config.asm"
%include "ext/x86/x86inc.asm"

SECTION .text

cglobal cpu_cpuid, 0, 5, 0, regs, leaf, subleaf
    mov        r4, regsmp
    mov       eax, leafm
    mov       ecx, subleafm
%if ARCH_X86_64
    mov        r5, rbx
%endif
    cpuid
    mov  [r4+4*0], eax
    mov  [r4+4*1], ebx
    mov  [r4+4*2], edx
    mov  [r4+4*3], ecx
%if ARCH_X86_64
    mov       rbx, r5
%endif
    RET

cglobal cpu_xgetbv, 0, 0, 0, xcr
    movifnidn ecx, xcrm
    xgetbv
%if ARCH_X86_64
    shl       rdx, 32
    or        rax, rdx
%endif
    RET